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In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Grassholm Island like this:
GRASHOLM, an islet in Pembroke; 10 miles WNW of St. Anne's head. A strong tide sweeps past it; and dangerous rocks are near.
Grassholm Island is now part of PEMBROKESHIRE District. Click here for graphs and data of how PEMBROKESHIRE has changed over two centuries. For statistics about Grassholm Island itself, go to Statistics.
How to reference this page:
GB Historical GIS / University of Portsmouth, History of Grassholm Island in Pembrokeshire | Map and description, A Vision of Britain through Time.
URL: https://www.visionofbritain.org.uk/place/11034
Date accessed: 08th April 2026
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Grassholm Island".